Waveguide with polarization volume hologram grating
US12099190B2 · kind B2 · utility
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2References
17Claims
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Key dates
| Filing date | Dec 13, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Dec 13, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide is provided. The waveguide includes a substrate having two outer surfaces for propagating a beam of light in the substrate by reflecting the beam from the two outer surfaces. The waveguide includes at least one polarization volume hologram (PVH) grating to couple light in and/or out of the waveguide. The PVH grating may be a multi-layer PVH grating with graded birefringence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.